Can a company send employees back to their...

We would like to inform you that the probation period is a right in favor of the employer to determine the extent of the worker's ability to continue to work or not within six months, during which he can dispense with the services of the worker during it without being obligated to warn the worker or pay the end of the legally end of services benefits.

As below article from the Labor Law states:

Article 37 :
The employee may be appointed for a probationary period not to exceed six months, and the employer may terminate the services of the employee during this period without giving a notice or end of service remuneration. Appointment of the employee on probation basis in the service of one particular employer may not be made more than once. However if the employee passed the probationary period satisfactorily, and remained in service, such period of service shall be computed in the period of his service.